| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Rondônia. |
|
Data corrente: |
09/02/2017 |
|
Data da última atualização: |
09/02/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
PFEIFER, L. F. M.; CASTRO, N. A.; NEVES, P. M. A.; CESTARO, J. P.; SIQUEIRA, L. G. B. |
|
Afiliação: |
LUIZ FRANCISCO MACHADO PFEIFER, CPAF-Rondonia; Natália A. Castro, UFPel; Paulo M.A. Neves, FIMCA; Jamyle P. Cestaro, FIMCA; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL. |
|
Título: |
Development and validation of an objective method for the assessment of body condition scores and selection of beef cows for timed artificial insemination. |
|
Ano de publicação: |
2017 |
|
Fonte/Imprenta: |
Livestock Science, v. 197, p. 82-87, 2017. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The objectives of this study were to: 1) evaluate the relationship of the angle formed between the left and right sides of the rump with body condition score (BCS) in cattle; and 2) develop an objective tool to select cows for timed artificial insemination (TAI) based on their BCS. In Experiment 1, 801 lactating Nelore cows, 3?12 years old and weighing 400?625 kg were enrolled. All females were evaluated according to BCS (scale 1?5). In addition, the angle formed between both sides of the rump was measured in all cows with a goniometer. The relationship between BCS and the rump angle was analyzed by linear regression. There was a positive relationship between BCS and rump angle (P<0.0001). The linear regression equation was angle =77.76+9.94 x BCS; R2=0.67. The aim of Experiment 2 was to evaluate BCS in a simple, direct and objective way using rump angle and related BCS to TAI performance. A device was developed called Vetscore® to determine BCS according to rump angle. Using the Vetscore, cows were classified into three different categories of BCS using a color-based method: red, BCS<2.75; green, BCS between 2.75 and 4.5; and yellow, BCS>4.5. A total of 429 Nelore suckling cows, 4?8 years old, were subjected to a TAI protocol based on estradiol benzoate, exogenous progesterone, prostaglandin F2α, equine chorionic gonadotropin and estradiol cypionate. At Day 0, all cows were evaluated with the Vetscore® and classified according to the device's BCS color scale. Pregnancy diagnosis was performed by ultrasonography 30 d after TAI. Pregnancy per AI (P/AI) was analyzed using the chi-square test. A good level of agreement was observed between Vetscore's scale and visual BCS (82.9%). Cows classified as ?green? had higher P/AI than cows classified as ?red? and ?yellow? (60.4%, 168 of 278; 42.4%, 61 of 144; and 28.6%, 2 of 7; respectively; P<0.001). These results demonstrate that Vetscore® is an efficient and low-cost methodology for the assessment of BCS and, indirectly, nutritional status of beef cows. Finally, cows classified as adequate according to Vetscore® color scale had higher P/AI at 30 d compared with those considered inadequate. MenosThe objectives of this study were to: 1) evaluate the relationship of the angle formed between the left and right sides of the rump with body condition score (BCS) in cattle; and 2) develop an objective tool to select cows for timed artificial insemination (TAI) based on their BCS. In Experiment 1, 801 lactating Nelore cows, 3?12 years old and weighing 400?625 kg were enrolled. All females were evaluated according to BCS (scale 1?5). In addition, the angle formed between both sides of the rump was measured in all cows with a goniometer. The relationship between BCS and the rump angle was analyzed by linear regression. There was a positive relationship between BCS and rump angle (P<0.0001). The linear regression equation was angle =77.76+9.94 x BCS; R2=0.67. The aim of Experiment 2 was to evaluate BCS in a simple, direct and objective way using rump angle and related BCS to TAI performance. A device was developed called Vetscore® to determine BCS according to rump angle. Using the Vetscore, cows were classified into three different categories of BCS using a color-based method: red, BCS<2.75; green, BCS between 2.75 and 4.5; and yellow, BCS>4.5. A total of 429 Nelore suckling cows, 4?8 years old, were subjected to a TAI protocol based on estradiol benzoate, exogenous progesterone, prostaglandin F2α, equine chorionic gonadotropin and estradiol cypionate. At Day 0, all cows were evaluated with the Vetscore® and classified according to the device's BCS color scale. Pregnancy... Mostrar Tudo |
|
Palavras-Chave: |
Fertility; Gravidez; Inseminação artificial cronometrada; Timed artificial insemination. |
|
Thesagro: |
Condição Corporal; Fertilidade. |
|
Thesaurus Nal: |
body condition; cattle; pregnancy. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/155103/1/PFEIFER-etal-LivSci-Vetscore.pdf
|
|
Marc: |
LEADER 03057naa a2200277 a 4500
001 2063261
005 2017-02-09
008 2017 bl uuuu u00u1 u #d
100 1 $aPFEIFER, L. F. M.
245 $aDevelopment and validation of an objective method for the assessment of body condition scores and selection of beef cows for timed artificial insemination.$h[electronic resource]
260 $c2017
520 $aThe objectives of this study were to: 1) evaluate the relationship of the angle formed between the left and right sides of the rump with body condition score (BCS) in cattle; and 2) develop an objective tool to select cows for timed artificial insemination (TAI) based on their BCS. In Experiment 1, 801 lactating Nelore cows, 3?12 years old and weighing 400?625 kg were enrolled. All females were evaluated according to BCS (scale 1?5). In addition, the angle formed between both sides of the rump was measured in all cows with a goniometer. The relationship between BCS and the rump angle was analyzed by linear regression. There was a positive relationship between BCS and rump angle (P<0.0001). The linear regression equation was angle =77.76+9.94 x BCS; R2=0.67. The aim of Experiment 2 was to evaluate BCS in a simple, direct and objective way using rump angle and related BCS to TAI performance. A device was developed called Vetscore® to determine BCS according to rump angle. Using the Vetscore, cows were classified into three different categories of BCS using a color-based method: red, BCS<2.75; green, BCS between 2.75 and 4.5; and yellow, BCS>4.5. A total of 429 Nelore suckling cows, 4?8 years old, were subjected to a TAI protocol based on estradiol benzoate, exogenous progesterone, prostaglandin F2α, equine chorionic gonadotropin and estradiol cypionate. At Day 0, all cows were evaluated with the Vetscore® and classified according to the device's BCS color scale. Pregnancy diagnosis was performed by ultrasonography 30 d after TAI. Pregnancy per AI (P/AI) was analyzed using the chi-square test. A good level of agreement was observed between Vetscore's scale and visual BCS (82.9%). Cows classified as ?green? had higher P/AI than cows classified as ?red? and ?yellow? (60.4%, 168 of 278; 42.4%, 61 of 144; and 28.6%, 2 of 7; respectively; P<0.001). These results demonstrate that Vetscore® is an efficient and low-cost methodology for the assessment of BCS and, indirectly, nutritional status of beef cows. Finally, cows classified as adequate according to Vetscore® color scale had higher P/AI at 30 d compared with those considered inadequate.
650 $abody condition
650 $acattle
650 $apregnancy
650 $aCondição Corporal
650 $aFertilidade
653 $aFertility
653 $aGravidez
653 $aInseminação artificial cronometrada
653 $aTimed artificial insemination
700 1 $aCASTRO, N. A.
700 1 $aNEVES, P. M. A.
700 1 $aCESTARO, J. P.
700 1 $aSIQUEIRA, L. G. B.
773 $tLivestock Science$gv. 197, p. 82-87, 2017.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Rondônia (CPAF-RO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 130 | |
| 14. |  | CAMARGO, L. S. de A.; OLIVEIRA, C. S.; PFEIFER, L. F. M.; MACHADO, R. Avanços e inovações em biotécnicas da reprodução em bovinos de leite. In: VILELA, D.; FERREIRA, R. de P.; FERNANDES, E. N.; JUNTOLLI, F. V. (Ed.). Pecuária de leite no Brasil: cenários e avanços tecnológicos. Brasília, DF: Embrapa, 2016. p. 325-343.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Gado de Leite; Embrapa Pecuária Sudeste. |
|    |
| 16. | | PFEIFER, L. F. M.; VIANA, J. H. M.; SIQUEIRA, L. G. B.; ARASHIRO, E. K. N. Tecnologias emergentes na ultrassonografia do trato reprodutivo. NOGUEIRA, E.; SILVA, J. C. B.; NICACIO, A. C.; MINGOTI, G. Z. (ed.). Ultrassonografia na reprodução e avaliação de carcaças em bovinos. Brasília, DF: Embrapa, 2021. Cap. 5. e-pub.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
| |
| 17. | | LIMA, H.; FERREIRA, F. C.; PFEIFER, L. F. M.; SCHMITT, E. Transferência de tecnologias de produção de bezerros leiteiros em Porto Velho, Rondônia. In: CONGRESSO INTERNACIONAL DO LEITE, 12.; WORKSHOP DE POLÍTICAS PÚBLICAS, 12.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 13., 2013, Porto Velho. Anais... Brasília, DF: Embrapa, 2013. 3 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| 20. | | CASTRO, N. A. de; SIQUEIRA, L. G. B.; VIANA, J. H. M.; PFEIFER, L. F. M. Uso da PGF como indutor de ovulação em programas de IATF em vacas de leite pós-parto. In: CONGRESSO INTERNACIONAL DO LEITE, 12.; WORKSHOP DE POLÍTICAS PÚBLICAS, 12.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 13., 2013, Porto Velho. Anais... Brasília, DF: Embrapa, 2013. 3 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| Registros recuperados : 130 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
